Finding the Fourth Proportional to 121,908.41, 168,247.56 and 68,207.03
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Solution
The fourth proportional to 121,908.41, 168,247.56 and 68,207.03 is: 94,133.51
Step by Step Solution
- Step 1: Write the proportion equation
121,908.41 : 168,247.56 = 68,207.03 : x - Step 2: Convert to fraction form
121,908.41/168,247.56 = 68,207.03/x - Step 3: Cross multiply
121,908.41x = 168,247.56 × 68,207.03 - Step 4: Simplify right side
121,908.41x = 11,475,665,531.11 - Step 5: Solve for x
x = 11,475,665,531.11/121,908.41 - Step 6: Final answer
x = 94,133.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.